Straight handpiece



FIG. 1 is a front view of a straight handpiece showing my new design, the opposite view being identical;

FIG. 2 is a right side view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a plan view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a perspective view thereof; and,

FIG. 7 is a perspective view thereof, broken lines showing environment forming no part of the claimed design. 

The ornamental design for a straight handpiece, as shown and described. 